Guide bearing for sucker and pull rods



CFI

Patented Feb. 21, i928.

rar-,Enr carica.,

JOHN L. BOICOURT, OFEORT VORTI-I, TEXAS.

GrU'IDEv BEARING FOR SUCKER AND PULL RODS.

Application filed December 3,1', 1923. Serial No. 683,674.

My invention yrelatesto pump rods and more particularly to guidebearings tor double acting pump rods; and the object is to providesimple devices which will prevent .wear ot' the outside rod by theinside rod and which will prevent buckling or unnecessary vibrations otthe inside rod. object is to make the pump rods more easily removed fromthe well for repairs or other' purposes. Other objects and advantageswill be fully explained in the following description and the inventionwill. be more particularly pointed out in the claims.

Reference is hadV to the accompanying drawings which form a part ot'this application.

l? ig. l is a broken sectional elevation,l

showingthe construction of the joints ot the inside and outside rods andshowing one ot the guide bearings. Fig. 2 is a broken sectionalelevation, showing two outside rod couplings, two rod couplings, and twoguide bearings. Fig. 3 illustrates the rod couplings. Fig. 4 isahorizontal section enlarged, taken on the line 44 of Fig. 2. F ig. 5shows a variation in the construction of the exterior column coupling.shows a variation in the guide bearing and a variation in the rodcoupling.

Similar characters of reference are used to indicate the same partsthroughout the several views.

rlfhe drawings show a pipe or cylinder l in sections coupled together bycouplings 2. the sections l being usually twenty feet long. The rod 3 isalso in sections coupled together by couplings 4.

The improvement is shown as guide beau ings made ot sections of pipe 5.These sections are made rigid with the pipe sections 1, a guide-bearing5 in each pipe section. The guide-bearings are so arranged that theywill lift the rod sections 3 by engaging the couplings 4. When the rodpipe l is lifted by the ordinary elevators, the bearing members 5 serveas elevators for the rod sections 3 by engaging the lower ends of thecouplings 4. The pipe sections l are elevated by the usual elevatorswhich catch under the couplings 2, two elevators being used alternately.Onev elevator will litt the pipe column by catching under one coupling.This lifts the pipe column twenty feet. Be- :tore the elevator releasesthe elevated col-V Another Fig. 6 f

umn, the nent elevator is placed under the neat coupling 2. rthe liftingot the pipe column automatically litts the rrod column because Aabearing-.guide 5 will catch under a rod coupling 4. As each pipe sectionis raised above the'V well casing the section is unscrewed vtrom thecoupling 2 and removed.

he inclosed rod section 3 can then'be unscrewed from the coupling 4.Thus one section l ot the pipe column is removed ata time and onesection Sof the rod column is removed at a time. This is one function ofthe guide-bearing 5. The guide-bearing 5 may be a bronze bushing.

rlhe other r'iunctions of the guide-bearing v5 is to prevent the rodcolumn from rubbing against and wearing the pipe column. TheVguide-bearing 5 will also prevent the vibration and buckling ot the rodcolumn. The guide-bearing 5 thus prevents lashingtogether of the rodcolumn and the pipe column, prevents the wearing away of the rods andcouplings, and stittens the rod column by holding the slack rod inperfect alignnient with the taut rod, one rod being taut atall times. Bysuch construction and arrangement, the weight of the columns can bereduced approximately 50%.

It is apparent that more than one guidebearing 5 may be inserted in theexteriorl pump rod l. The guide-bearings constitute shoulders forengaging a coupling or shoulder of the rod column or interior pump rod.Various other changes may be made in the sizes, construction, andarrangement of the several parts without departing from my invention.`

Fig. 5 illustrates a shoulder 6 in a cou-l pling 7 which may be usedinstead of the guide-bearing or shoulder 5 of the previous.

views. j

v Fig. 6 illustrates a coupling for the eztN terior pump rod and thiscoupling 8 has interior shoulders l() fory a guide-bearing 9 which isheld against displacement by thc shoulders 10. This view also shows avariation l1 in the coupling or" the interior pump rod. The guidebearing 9 may or may not be rigid with the exterior pump rod l. Thebearing 9 will serve the same purpose inthe elevation ot' the pipesections as in previous views. The bearing 9 will engage the element 1lter elevation just as bearing 5 engags element 4 of the `previous views.The

shoulder 10 mei-ely co-opei'ates with that portion of the bea-ring 9which projects' down inuo ldie element 1.

l/Vliat I Claim, ,isf-

1. In a double acting pump rod consisting of a pipe column in aplurality of Sections and a iod column in sections `nov'ided with i'odcouplings; u guide-bearing consisting .of a section oi pipe rigid with'the interior of said pipe column and vadapted to engage :i coupling o5said rod column 'for liting` Suid rod column.

2. fi guide bearing und liing device for yexterioi und interior pumprods comprising u Section oi pipe ifigid-wvih the interior of saidexerioi"rod'afud-sui'i'ounding said iu- 1 isgolioy terioi pump rodloosely andl adapted to engage said interior pump rod for liftingrthesame. l i

3. Theoomloination with an exteriogf pump i'od and im ini'erioi pump rodconsisting of sections and couplings connecting the secions, of aguide-beai'ing rigid With the in temor osud vezijteilogi pump rod and Sui'-irouuding loosely a portion olI a Section of

